Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd51ed10c8786341…

MALICIOUS

PDF

43.0 KB Created: 2020-08-11 00:55:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88853e5a78a219b1de7db62af0d0abf8 SHA-1: cc5f4609368fb639930a73011ad2fa2a52338780 SHA-256: dd51ed10c8786341bec381f831583c3828d6b0e3ae8b3734e7158ffb48a296e7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with one pointing to a known malicious redirector. The document body and embedded links suggest an attempt to manipulate search engine results or redirect users to malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=lista+de+antibioticos+pdf. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=lista+de+antibioticos+pdf
    • http://files.ceib.rs/uploads/1/3/0/9/130969080/c276455b6ccb6e.pdf
    • http://files.ieleaders.net/uploads/1/3/0/7/130776718/45c35ab516bd.pdf
    • http://xobifu.bookrackpeoria.com/uploads/1/3/2/6/132695615/9058470.pdf
    • https://cdn.shopify.com/s/files/1/0428/5077/9295/files/mejanijadepeniresonota.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mikawewetekiwu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/makobe.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/knee_arthroscopy_portals.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/mercedes_c_class_2020_brochure.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6375/files/47146777855.pdf
    • https://cdn.shopify.com/s/files/1/0432/8233/3856/files/80163534187.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3553/files/suitability_acceptability_feasibility.pdf
    • https://cdn.shopify.com/s/files/1/0433/2247/4651/files/18653924023.pdf
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/tobulabaximuxufujexo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3134/6856/files/koremofonomudu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0342/8510/files/8073884596.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006885.bin
8cd370584bcdf7f84edf05919d283228e606afb272728106da06e7a78fb0d3e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6885 5100 bytes
font_01_sfnt_off000079e7.bin
1ebfb2c5d3fc72b4d5d1550f1181c731774e7e9d4dc447174cb5c3418a371226		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79E7 11128 bytes

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